<#assign base=request.contextPath />
<!DOCTYPE html>
<!-- page content -->
        <div class="col-md-12">
          <div class="col-middle">
            <div class="text-center text-center">
              <h1 class="error-number">500</h1>
              <h2>对不起，页面出错，请联系系统维护人员</h2>
              <p>This page is error.</p>
            </div>
          </div>
        </div>
        <!-- /page content -->
